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Questions tagged [mp4a]

7 questions
4
votes
1 answer

Creating a white noise audio track using AVAssetWriter

I'm currently using AVAssetWriter to generate a Quicktime mov. The video track is generated correctly. Now I'd like to add a "garbage" mp4a audio track. The audio can just be white noise. What I'm mainly concerned with is the mov file containing…
MrDatabase
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4 answers

Build an ESDS Box for an MP4 that Firefox Can Play

I am generating MP4 files (with h.264 video and AAC audio) by transmuxing from MPEG-TS in JavaScript to be played in the browser via blob URLs. Everything works fine in Chrome, and if I grab the blob URLs out of the developer console and download…
Logan R. Kearsley
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How to decode RTP/MP4A-LATM audio payload

I am working on an implementation of RTSP in J2ME to connect to Wowza. I have the RTSP part working, and the extraction of RTP packets. I am able to decode and display the h264 video stream. I am having problems understanding how to create an…
tiggit
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How to depacketize the Mp4a-latm content frm the RTP packets?

How can we extract the raw AAC frames from an mp4a-latm content packetized in RTP packets? I have gone through the RFCs 3016 but nothing is concrete and much clearer. I have also seen the code of ffmpeg as how they do it. I have understood that…
NitinG
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Streaming mp4a to localhost using udp and ffmpeg

I am using the following command to stream a video and it's audio to localhost: ffmpeg -re -i out.mp4 -map 0:0 -vcodec libx264 -f h264 udp://127.0.0.1:1234 -map 0:1 -acodec libfaac -f mp4a udp://127.0.0.1:2020 FFmpeg is not recognising my audio…
noswoscar
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1 answer

Unable to playback .mp4 audio file in Firefox, works in Chrome

I have been trying to play a file through Firefox to see if it is compatible for a website and cannot figure out why it cannot play whereas it will play on Chrome okay. It simply shows a error box that the "video cannot be played because the file is…
SpartanVXL
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How to decode a MP4A-LATM codec from a pcap file?

some video streams are contained in a packet with 2 formats , which is .H264 & MP4A -LATM.after conjoining the both , then only we'll get a fine audio.Using the H264 extractor ive extracted the h264 and i got the video from it. and later i converted…
himiko takamashi
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